Climate change impacts and vegetation response on the island of Madagascar
Ingram, J. Carter and Dawson, Terence P. (2005) Climate change impacts and vegetation response on the island of Madagascar. Philosophical Transactions of the Royal Society Series A, 363, (1826), 55-59. (doi:10.1098/rsta.2004.1476).
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The island of Madagascar has been labelled the world's number one conservation 'hot spot' because of increasing anthropogenic degradation of its natural habitats, which support a high level of species endemism. However, climatic phenomena may also have a significant impact upon the island's flora and fauna. An analysis of 18 years of monthly satellite images from the National Oceanographic and Atmospheric Administration's (NOAA) Advanced Very High Resolution Radiometer (AVHRR) have demonstrated that there is a dynamic pattern in Madagascar's vegetative cover both annually and seasonally throughout 1982-1999. Over interannual time-scales, we show that this vegetation response, calculated using the normalized difference vegetation index (NDVI), has a strong negative correlation with the El Niño Southern Oscillation (ENSO), which can be attributable to drought events and associated wildfires. Global climate change is predicted to increase the frequency of the ENSO phenomenon, resulting in further decline of Madagascar's natural environment.
|Keywords:||Madagascar, vegetation change, Enso (El Niño Southern Oscillation), Ndvi (Normalized Difference Vegetation Index)|
|Subjects:||G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > GE Environmental Sciences
G Geography. Anthropology. Recreation > GB Physical geography
|Divisions:||University Structure - Pre August 2011 > School of Geography > Remote Sensing and Spatial Analysis
|Date Deposited:||14 Aug 2008|
|Last Modified:||01 Jun 2011 00:39|
|Contact Email Address:||T.P.Dawson@soton.ac.uk|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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